package com.maochang.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.maochang.reggie.common.R;
import com.maochang.reggie.pojo.Employee;
import com.maochang.reggie.service.EmployeeService;
import lombok.extern.java.Log;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import java.nio.charset.StandardCharsets;
import java.time.LocalDateTime;

/**
 * 员工管理
 */
@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController {

    @Autowired
    private EmployeeService employeeService;


    /**
     * 员工登录
     * @param request
     * @param employee
     * @return
     */
    @PostMapping("/login")
    public R<Employee> login(HttpServletRequest request, @RequestBody Employee employee){

        //1.将页面提交的密码password进行md5加密处理
        String password = employee.getPassword();
        password = DigestUtils.md5DigestAsHex(password.getBytes());
        System.out.println(employee);
        //2、根据页面提交的用户名username查询数据库
        LambdaQueryWrapper<Employee> lambdaQueryWrapper=new LambdaQueryWrapper<>();
        lambdaQueryWrapper.eq(Employee::getUsername,employee.getUsername());
        Employee emp = employeeService.getOne(lambdaQueryWrapper);

        //3.如果没查询到则返回登录失败结果
        if(emp == null){
            //System.out.println(R.error("登录失败"));
            return  R.error("登录失败-未有此用户");
        }

        //4.密码对比,如果不一致则返回登录失败结果
        if(!emp.getPassword().equals(password)){
            return R.error("登录失败-密码错误");
        }

        //5、查看员工状态，如果为已禁用状态，则返回员工已禁用结果
        if(emp.getStatus() == 0){
            return R.error("账号已禁用");
        }

        //6、登录成功，将员工id存入Session并返回登录成功结果
        request.getSession().setAttribute("employee",emp.getId());
        return R.success(emp);
    }

    /**
     * 员工退出
     * @param httpServletRequest
     * @return
     */
    @PostMapping("/logout")
    public  R<String> logout(HttpServletRequest httpServletRequest){

        //1.清理Session中保存的当前登录员工的id
        httpServletRequest.getSession().removeAttribute("employee");
        return  R.success("退出成功");

    }

    @PostMapping
    public  R<String> save(HttpServletRequest request,@RequestBody Employee employee){

        log.info("新增员工,员工信息,{}",employee.toString());

        //1.设置初始密码123456,需要进行md5加密
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes(StandardCharsets.UTF_8)));

        employee.setCreateTime(LocalDateTime.now());
        employee.setUpdateTime(LocalDateTime.now());

        //2.获取当前登录用户的id
        Long empId=(Long) request.getSession().getAttribute("employee");
        employee.setCreateUser(empId); //创建此用户的管理员
        employee.setUpdateUser(empId); //修改此用户的管理员

        //3.调用service方法
        employeeService.save(employee);
        return R.success("新增员工成功");
    }

    /**
     * 分页查询
     * @param page
     * @param pageSize
     * @param name
     * @return
     */
    @GetMapping("/page")
    public  R<Page> page(int page,int pageSize,String name){
        log.info("page={},pageSize={}",page,pageSize,name);

        //1.构造分页构造器
        Page pageInfo = new Page(page, pageSize);


        //2.构造条件构造器
        LambdaQueryWrapper<Employee> queryWrapper = new LambdaQueryWrapper<>();
        //添加过滤条件
        queryWrapper.like(StringUtils.isNotEmpty(name),Employee::getName,name);
        //添加排序条件
        queryWrapper.orderByDesc(Employee::getUpdateTime);

        //3.执行查询
        employeeService.page(pageInfo, queryWrapper);

        return  R.success(pageInfo);
    }

    /**
     * 根据id修改员工信息
     * @param employee
     * @return
     */
    @PutMapping
    public R<String>  update(HttpServletRequest request,@RequestBody Employee employee){
        log.info(employee.toString());
        //1.会话中拿到当前登录的员工id
        Long empId = (Long)request.getSession().getAttribute("employee");
        //修改的时间
        employee.setUpdateTime(LocalDateTime.now());
        //修改的用户
        employee.setUpdateUser(empId);
        //修改的信息
        employeeService.updateById(employee);
        return R.success("员工信息修改成功");
    }


    /**
     * 根据id查询员工信息
     * @param id
     * @return
     */
    @GetMapping("/{id}")
    public R<Employee> getById(@PathVariable Long id){
        log.info("根据id查询员工信息...");
        Employee employee = employeeService.getById(id);
        if(employee != null){
            return R.success(employee);
        }

        long id1 = Thread.currentThread().getId();
        log.info("线程id为：{}",id1);

        return R.error("没有查询到对应员工信息");
    }


}
